Grilled Chicken Cordon Bleu

Preheat grill to medium-high. Cut a pocket into each breast by inserting a knife blade into the wide end. Sweep the blade back and forth, cutting the opening larger, being careful not to cut through the end, top, or bottom. Wrap a slice of ham around each block of cheese and insert into the pockets. Coat each breast with Dijon and season with salt and pepper. Grill chicken, covered, 5 minutes each side.